Hi @zlinaz,
I think the issue you’re hitting is described in the, Mixing ESC Protocols section of the dshot/BLheli setup. In short there are some hardware limitations which means different protocols can’t be setup on some adjacent outputs. You will probably find that if you separate the outputs used for the two protocols more it works. E.g. use DShot/BLheli on outputs 1 and 2 and regular PWM on 5, 6 etc.
Re the min, max and trim being set automatically, this is expected behaviour (perhaps it should be mentioned on the wiki) but it has to do with how the low level outputs are sent to the ESCs. hopefully it doesn’t interfere with your setup.